A5070343411- Structural Analysis of Composite Materials
- Nanopore and Nanochannel Transport Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Cellular and Composite Structures
- Carbon Nanotubes in Composites
- NMR spectroscopy and applications
- Fuel Cells and Related Materials
- Material Dynamics and Properties
- Wind and Air Flow Studies
- Groundwater flow and contamination studies
- Graphite, nuclear technology, radiation studies
- Membrane Separation Technologies
- Automotive and Human Injury Biomechanics
- Aerogels and thermal insulation
- Enhanced Oil Recovery Techniques
- Inorganic Fluorides and Related Compounds
- Nuclear reactor physics and engineering
- Boron and Carbon Nanomaterials Research
- Building materials and conservation
- Structural Engineering and Vibration Analysis
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Structural Response to Dynamic Loads
- Zeolite Catalysis and Synthesis
- Wood Treatment and Properties
Tsinghua University
2012-2024
University of Birmingham
2021-2023
University of Oxford
2018-2021
Heilongjiang University of Technology
2021
Oxfam
2018
Changchun University of Technology
2016
University of California, San Diego
2016
Qingdao University of Technology
2010
State Key Laboratory of Chemical Engineering
2005
The field of metal–organic framework (MOF) materials is rapidly advancing toward practical applications; consequently, it urgent to achieve a better understanding and precise control their physical properties. Yet, research on the dielectric properties MOFs at its infancy, where studies are confined static behavior or lower-frequency response (kHz-MHz) only. Herein, we present pioneering use synchrotron-based infrared reflectivity experiments combined with density functional theory (DFT)...
Abstract Compressibility is a fundamental property of all materials. For fluids, that is, gases and liquids, compressibility forms the basis technologies such as pneumatics hydraulics determines basic phenomena propagation sound shock waves. In contrast to gases, liquids are almost incompressible. If could be increased controlled, new applications in absorption result. Here, it shown dispersing hydrophobic porous particles into water gives aqueous suspensions with much greater...
Abstract The mechanical behavior of polyvinyl butyral (PVB) significantly influences crashworthiness and energy mitigation abilities windshields in terms pedestrian safety. In this article, characteristics PVB are experimentally studied. First, tension compression experiments on specimen carried out under various quasi‐static loading rates. Fundamental mechanism rate‐dependent is investigated. Besides, dynamic experimental data compared to investigate the a whole strain rate region it found...
The structural flexibility of ZIF-8 has been elucidated by liquid intrusion under moderate pressures tens MPa.
Abstract Interaction with liquids at the ultra‐large surface area of nanoporous material enables a high‐efficiency energy dissipation system wide perspective applications [A. Han, et al. , Langmuir 2008, 24 7044]. In this paper, composed mixture zeolite ZSM‐5 and water is established studied experimentally. Firstly, quasi‐static compression experiments are carried out to analyze pressure–volume curve reveal mechanism. Afterwards, parametric study conducted explore effects three parameters,...
Different from a bulk phase, gas nanophase can have significant effect on liquid motion. Herein we report series of experimental results molecular behaviors water in zeolite β molecular-sized nanopores. If sufficient time is provided, the confined molecules be "locked" inside nanopore; otherwise, provides driving force for "outflow". This due to difficult site exchanges and relatively slow gas-liquid diffusion nanoenvironment. Depending loading rate, β/water system may exhibit either...
Liquid intrusion into zeolitic imidazolate framework 7 (ZIF-7) has been observed for the first time. Among three typical phases of ZIF-7, we discover that only guest-free ZIF-7-II structure can be intruded by mechanical pressure, and intriguingly, this pressurized liquid behavior is detected in nanocrystals, indicating crystal size effect. Because its unique combination non-outflow property high water generates a marked energy dissipation capacity ∼2 J/g despite limited pore volume. We...
The crush behaviors of steel tubes filled with nanoporous-materials-functionalized liquids are experimentally investigated under quasi-static and dynamic conditions. Results show that the liquid can enhance load-carrying energy absorption capacities thin-walled tubes, as buckling mode is affected. effective stress increases infiltration pressure, overall compressibility highly dependent on nanopore volume. A general rule designing liquid-filled proposed. interaction between tube wall analyzed.
The defiltration performance of the zeolite ZSM-5/liquid system can be effectively modified by sodium hydroxide (NaOH) additive with various concentrations. infiltration NaOH aqueous solutions increases density silanol (Si-OH) groups on inner surface porous ZSM-5, converting originally hydrophobic to hydrophilic and ceasing liquid outflow. More importantly, adjusted independently without affecting working pressure system. This unique associated hydrophobic-hydrophilic transition nanopore...
Hydrophobic nanoporous material and wetting liquid together comprise a system with promising energy related applications. The mechanism of the interaction between solid phase is not fully explored. In this paper, based on quasistatic compression experiments investigating mechanical behavior ZSM‐5 zeolite/NaCl solution system, effects two key parameters, that is, pretreatment temperature zeolite NaCl concentration, are parametrically quantitatively investigated Laplace‐Washburn equation....
Abstract Elastomeric cellular structures provide a promising solution for energy absorption. Their flexible and resilient nature is particularly relevant to protection of human bodies. Herein we develop an elastomeric structure filled with nanoporous material functionalized (NMF) liquid. Due the nanoscale infiltration in NMF liquid its interaction cell walls, has much enhanced mechanical performance, terms loading capacity absorption density. Moreover, it validated that highly compressible...
Rate effect of liquid infiltration in mesopores is associated with both viscosity and the solid–liquid interfacial effect.
In this paper, energy absorption characteristics of PVB laminated windshield subject to human head impact are studied. SHPB method is carried out obtain the constitutive relationships glass in dynamic behavior. With results embedded, finite element simulation used study behavior windshield. particular, investigated. Two parameters for measuring property suggested, i.e. loss velocity and HIC value a parametric see effect position. Results can shed lights on research capability
Using molecular dynamics simulations, the prospects are explored of using bundles, forests, and single carbon nanotubes (CNTs) for absorbing mechanical energies upon crushing. In particular, deformation energy absorption characteristics compared between hollow water-filled CNTs. It is shown that buckling properties CNTs strongly depend on their geometrical parameters, whereas critical load postbuckling stress can be significantly elevated with a filament water, leading to pronounced...
The dynamic fracture behavior of PVB laminated glass during impact has been studied by both theoretic and finite element approaches. To make the analysis cracking on more accurate direct, high-speed photography method is introduced in this paper. Different crack patterns as well their sequences appearance are visualized. Finally, typical measured order to obtain important characteristics such velocity acceleration.
Abstract A 150MWt pebble bed high temperature reactor, called PeLUIt-150, is proposed as a solution for distributed energy demand including the electricity and various co-generation potentials. In current study an optimization of design performed. The includes its optimum power density to have compact core height-to-diameter (H/d) ratio. As several computer codes used in this study, PEBBED-THERMIX codes, comparison results from different code also discussed. Constrain at stage are maximum...